Contingency in a Development Budget: What It Covers and Who Releases It

A contingency is a priced list of risks, not a round percentage. What belongs inside it on a Saudi development, what drives its size, and how to govern it.

A contingency is not a cushion of optimism, it is a reserve sized against specific risks that have not yet resolved. Treated that way it shrinks as the project becomes more certain and it can be defended line by line. Treated as a percentage nobody can explain, it gets spent early on scope that was simply forgotten. This breaks a development contingency into the risks it is actually covering.

What this number does and does not include

This covers the owner contingency held against a development budget before and during construction. It is separate from a contractor risk allowance inside a tender price, and separate from a profit margin, which is a return requirement rather than a reserve. The percentages a project needs are specific to what it knows, so the drivers below matter far more than any general figure.

Ground and substructure risk

The reserve against what the earth does once you open it: weaker bearing capacity than assumed, unexpected fill, rock, groundwater or buried obstructions. Substructure is the least predictable element of a building and the one that resolves earliest, which makes it the first part of the contingency you can release.

• Pushes it up: A site with no ground investigation, a basement, a sloping plot or a history of previous use.
• Brings it down: A thorough geotechnical report with enough boreholes, and a shallow foundation solution on known ground.
• How to control it: Commission the investigation before the budget is fixed, then reduce this allowance once foundations are complete.

Design development

The allowance for scope that appears as the design gets more detailed: junctions, fixings, builders work, additional services, thicker structure. It is not a design error allowance, it is recognition that a concept drawing describes less than a construction drawing.

• Pushes it up: A budget set at concept stage, an unusual form, and several disciplines still to be coordinated.
• Brings it down: A repeat building type, a design frozen before tender and a complete coordinated set at pricing.
• How to control it: Re-estimate at each design stage and release the remainder of this allowance once the tender set is complete.

Statutory and approvals risk

The reserve against requirements that emerge through the approval process: fire safety provisions, access arrangements, utility conditions or comments that require the design to change. Requirements are set by the relevant authorities and confirmed with them, so the risk is about what your particular scheme triggers.

• Pushes it up: A novel building type, a large or mixed-use scheme, a sensitive location and a design submitted before requirements were checked.
• Brings it down: Early pre-application engagement and an engineering office experienced with that authority.
• How to control it: Ask for the approvals requirements in writing at concept stage, then reduce this allowance as each approval is obtained.

Price movement to tender

The gap between the cost base of your estimate and the market at the time bids are received. Material and labour prices move, and a budget built on rates from a year earlier is a historical document rather than a forecast.

• Pushes it up: A long gap between estimate and tender, imported components, and a busy local construction market.
• Brings it down: A short pre-construction period, locally sourced materials and early engagement with the supply chain.
• How to control it: Date the cost base, carry an explicit inflation line to the expected tender date, and shorten the gap where you can.

Quantity and measurement risk

Where a contract is remeasured, the final quantities differ from the bill. Where it is lump sum, errors and omissions in the documents become variations. Either way there is a spread between the contract sum and the final account that has nothing to do with anyone changing their mind.

• Pushes it up: A remeasured contract, an incomplete tender set, provisional sums and heavy use of approximate quantities.
• Brings it down: A complete design at tender, a lump sum contract and a bill checked by a cost consultant.
• How to control it: Reduce provisional sums before tender, and track the final account exposure monthly rather than at the end.

Programme and delay exposure

The reserve against extended time: finance on land and works for longer, prolonged site overheads where the owner is responsible for the delay, and a later start to revenue. Programme risk has a cost even when nobody is at fault.

• Pushes it up: A long approvals route, imported long lead items, and a project dependent on a utility connection.
• Brings it down: A single main contractor, early procurement of long lead packages and approvals obtained before award.
• How to control it: Hold this allowance against the cash flow rather than the construction budget, and test it with a delayed programme.

Owner change allowance

A separate, named amount for the changes you will decide to make. Every owner makes some, and pretending otherwise means every change is funded from the risk reserve, leaving nothing for actual risk.

• Pushes it up: A first project, an owner based abroad seeing the building only in drawings, and an unfinished brief.
• Brings it down: A frozen brief, mock-ups or sample rooms agreed early and a clear specification standard.
• How to control it: Fix a change budget at award, track it separately from contingency, and require your own written approval for each release.

Costs that never appear on the first page

• Extended consultant fees when the programme lengthens and supervision continues longer.
• A second round of approvals fees or studies if a design change triggers resubmission.
• Testing, commissioning and snagging work that exceeds the allowance in the contract.
• Currency movement on imported packages between order and delivery.
• Holding and security costs on a site that stands idle between phases.
• The cost of your own time and travel when a decision cannot be taken remotely.

Keeping the budget honest

Size the contingency against a written list of risks and their likely range, then reduce it on a schedule as each risk resolves: after the ground investigation, after the tender set is complete, after each approval and after foundations. A contingency that is still at its opening figure late in a project is being saved rather than managed, and one that is exhausted before construction was never a reserve at all.

• After the geotechnical report, when substructure risk narrows sharply.
• At the end of developed design, when design development risk falls.
• At tender return, when price movement risk becomes a known number.
• After foundations are complete, when the largest physical unknown is behind you.
• At each monthly cost report, comparing releases against the register.

Domira designs, builds and manages projects across Saudi Arabia for owners who are based abroad: land appraisal, feasibility, design, construction, handover and asset management under one accountable contract. Send us the plot or the brief and Domira will put the numbers in front of you before you commit.